JPH05305485A - Device for manufacturing wire - Google Patents

Abstract

PURPOSE:To facilitate the forming of an ideal cylindrical wire without pushing out powder at the time of forming into a cylindrical shape a band plate for outer casing that is formed in a semi-circular arc, in the manufacture of powder cored wire. CONSTITUTION:The device is provided with a first roller 11 by which the band plate for outer casing is bent in a U-shape, a second roller 12 by which the U-shaped band plate for outer casing is bent in a C shape, a filling device 3 by which the powder is filled in the C-shaped band plate for outer casing, and a third roller 13 by which the powder-filled band plate for outer casing is formed into a semi-circular arc. A group of cylinder forming rollers 14-19 is provided by which the circular-arcuate part is formed into a cylindrical shape while the joining edges 12 that are facing each other in the radius direction of the semi-circular arcuate band plate for outer casing are bent inward. In this wire manufacturing device, between the third roller 13 and the group of cylinder forming rollers 14-19, a wedge jig 15 is provided which bites into between the joining edges 12, 12 that are facing each other and by which the powder inside is stayed in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire producing apparatus for producing a welding wire for overlay heat-welding a portion of an aluminum alloy casting or the like to be reinforced to enhance heat resistance.

[0002]

2. Description of the Related Art Conventionally, a large heat load or mechanical load is exerted on the lower surface of the cylinder head facing the combustion chamber, especially between the intake and exhaust ports and between the intake and exhaust ports and the fuel injection nozzle hole (or the precombustion chamber hole). For this reason, this has been partially strengthened.

The applicant of the present invention has proposed an improvement measure concerning a method for strengthening an overlay of an aluminum alloy casting in Japanese Patent Application No. Hei 2-139677 (a method for modifying a surface of a metal-based part and an apparatus therefor).

In this method, in order to strengthen local heat resistance and local wear resistance of an aluminum alloy casting, a wire is fed out from a MIG welding torch and an arc is formed to remelt (remelt treatment) a portion to be strengthened. At the same time, ceramics or heat-resistant metal powder filled in the sheath material of the wire is contained or dissolved in the remelted layer to form a strengthening layer and improve the surface thereof. As the MIG welding wire, an aluminum-based drawn material with good formability is used as a sheath material,
Capsule powder having a core particle (mother particle) of a metal or ceramic material having heat resistance or wear resistance higher than that of the base material (Al) as a core particle, and a powder of the same material as the sheath material as a child particle on the surface thereof In terms of quality, using a composite wire filled with
It is suggested that it is superior in performance.

Conventionally, when a composite wire is manufactured by filling the sheath material with these powders, the powder is put into a strip for outer skin and formed into a wire shape by using a roller.
To explain this in Figure 7, the wire manufacturing apparatus, a plurality of rollers 1 ₁ to 1 _9, bent strip 2 ₁ of U-shaped hulls carrier strip 2 ₀ in the first roll 1 _1, second Roll 1 ₂ to C
Bending the shape of the strip 2 _2, filled with powder 4 for reinforcing from the filling device 3 to the strip 2 in _2, hereinafter the 3-9 roller 1 _3-9
Then, the semi-circular band plate 2 ₃ is formed into a cylindrical shape 2 ₄ to 2 ₉ to form a wire.

[0006]

The cross-sectional shape of this wire is an ideal cylindrical wire 10 as shown in FIG.
Is desirable.

However, when filling the powder 4 from the filling apparatus 3, there are variations in the quantitative property powder 4 is spilled during its in and form-fill, also cylindrical 2 ₄ is a molded body as shown in FIG. 8 of the mating surface 5 powder 4 protrudes, inside becomes void 6, in this state, not further a cylindrical 2 _{5-2 9} better be molded into a cylindrical wire 10 and the wire 7 The arc is not stable even when using overlay welding,
There is a problem that good overlay welding cannot be performed.

Therefore, an object of the present invention is to solve the above-mentioned problems and to manufacture a wire filled with a powder, when the outer cover band plate powder formed into a semi-arc shape is formed into a cylindrical shape,
An object of the present invention is to provide a wire manufacturing apparatus capable of forming an ideal cylindrical wire without the powder coming out.

[0009]

In order to achieve the above object, the present invention is directed to a first roller for bending an outer skin strip into a U-shape and a U-shaped outer skin strip for folding into a C-shape. A second roller, a filling device that fills the C-shaped outer strip with powder, a third roller that forms the outer strip after filling with powder into a semicircular shape, and a semicircular outer skin In a wire manufacturing apparatus including a cylindrical forming roller group that forms a circular arc portion into a cylindrical shape while bending inwardly joining pieces facing each other in the radial direction of the band strip, between the third roller and the cylindrical forming roller group,
It has a wedge jig that cuts into the gap between the facing joint pieces and pushes the powder inside.

[0010]

According to the above construction, the wedge jig is used before forming the semi-circular outer cover strip into the cylindrical shape by the cylindrical forming roller group.
By pushing the powder, it is possible to prevent the powder from sticking out from between the joining pieces, and it is possible to manufacture an ideal cylindrical wire in which the joining pieces are joined together neatly.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows an overall view of the wire manufacturing apparatus of the present invention. Basically, as described in FIG.
To 9 and the roller ₁ 1 to 1 strip 2 _{0 9} a wire, and FIG. 4 (a) ~ (l) and the strip 2 ₀ (a), the first roller ₁ 1 to 1 ₉ and molding conditions Is shown.

[0013] First strip spool 11 the strip 2 ₀ from (FIG. 2 (a)) is bent at the first roller 1 ₁ U-shaped strip 2 ₁ (FIG. 2 (b)), the second The roll 1 ₂ is bent into a C-shaped strip 2 ₂ (Fig. 2 (c)), and the reinforcing powder 4 is filled in the strip 2 ₂ by the filling device 3 (Fig. 2 (d)). Next, it is formed into a semi-circular band plate 2 ₃ by the third roller 1 ₃ (FIG. 2 (e)). Dermatologic strip 2 ₃ The semicircular arc shape, the junction pieces 12, 12 facing in the radial direction, consisting of circular arc portion 13.

After this, thereafter, the _fourth to _ninth rollers 14 to ₉ are used.
While the joining pieces 12, 12 are bent inward, the arc portion 13 is gradually formed into a cylindrical shape 14 ₄ to ₉ (Fig. 2 (g)).
(L)) is wound on the take-up reel 20, but in the present invention, before that, the wedge jig 15 arranged on the feed roller 14 is joined to the joining piece 12 as shown in FIG. ，
It is intended to penetrate into the gap 16 of 12 and push the powder 4 inside.

This will be described in more detail with reference to FIGS.

First, FIG. 3 (a) shows a state in which a powder 4 is filled in a semi-arcuate outer cover strip 2 _3. Next, as shown in FIGS. 3 (b) and 4, the wedge jig 15 is used. However, it is in a state of biting through the gap 16, and a gap 17 is formed below the gap 16 as shown in FIG. Therefore, FIG.
As shown in (d) to (g), that is, when the joining pieces 12, 12 are bent inward by the _fourth to ninth rollers 14 shown in FIG. It is prevented from sticking out. Further, in the _fifth to _ninth rollers ₁₅ to ₉ shown in FIGS. 2 (h) to (k), the arc portion 13 is gradually formed into a cylindrical shape.
4 ₄ ~ joining pieces 1 as shown ₉ is in the FIG. 3 (f)
An ideal wire 10 is formed in which 2 and 12 are neatly combined.

The width of the relationship between the shape Tokuzabi jig 15 of semicircular dermatological strip 2 _3, strip 2 ₃ for the current skin 7
5 mm and a thickness of 0.3 mm, first, as shown in FIG. 5A, the radius R of the outer cover strip 2 ₃ having a semi-arc shape is R = 1.6 mm,
The length t of the joining pieces 12, 12 is 1.0 mm, and the gap d is 1.2.
mm, and the biting tip 15a of the wedge jig is shown in FIG.
As shown in (b), any shape may be used as long as it has a sectional shape of width W = 1.2 mm and length L = 1.3 mm.

FIGS. 6 (a) and 6 (b) show a modified example of the wedge jig 15, in which the wedge jig 15 is roller-shaped and a wedge-shaped tip portion 15a is formed on the outer peripheral edge thereof.

An aluminum material, a copper plate or the like is used as the outer strip 2 and capsule powder is used as the powder 4. ..

The capsule powder is made of a ceramic material such as Al ₂ O ₃ , SiC, CuO, Si ₃ N ₄ or the like, which has good heat resistance or wear resistance, or Ni or C, which has a higher heat resistance than the sheath material.
A metal material such as r, Mo, Co, or Cu is used as a core particle (mother particle), and a powder of a material similar to that of the strip (Al or Cu) is used as a child particle on the surface of the core particle, and a high-speed airflow impact method is applied to the core particle. (Hybridization method) and the like.

[0021]

In summary, according to the present invention, before the semi-arcuate outer band strip is formed into a cylindrical shape by the group of cylindrical forming rollers, the wedge jig is used to press the powder into the powder, so that the powder is removed from between the joining pieces. It is possible to prevent the wire from sticking out, and it is possible to manufacture an ideal cylindrical wire in which the joining pieces of each other are joined together neatly.

[Brief description of drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is a diagram showing a roller formed in FIG. 1 and a forming shape of a strip plate.

FIG. 3 is a detailed view of a main part of FIG.

FIG. 4 is a perspective view of the state of FIG. 2 (b).

FIG. 5 is a diagram showing a dimensional relationship between a semi-circular strip plate and a wedge jig in the present invention.

FIG. 6 is a view showing a modified example of the wedge jig in the present invention.

FIG. 7 is a diagram showing a conventional example.

FIG. 8 is a view showing a cross-sectional shape of a defective wire manufactured by a conventional device.

FIG. 9 is a diagram showing an ideal wire cross-sectional shape.

[Explanation of symbols]

1 ₁ to ₉ rollers 2 ₀ to ₉ outer strip band 3 filling device 4 powder 12 joining piece 15 wedge jig 16 gap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Ishiyama Inventor, Isawa Chuo, Fujisawa City, Kanagawa Prefecture 8 Isuzu Central Research Institute (72) Inventor, Budoo, Isawa Chuo, Fujisawa City, Kanagawa Prefecture 8 Inside the laboratory (72) Inventor Yuji Matsunami 8 Tsutana, Fujisawa City, Kanagawa Prefecture Isuzu Central Research Institute (72) Inventor Harue Sugisaki 8th soil shelf, Fujisawa, Kanagawa Prefecture Isuzu Central Laboratory (72) Invention Akira Tsujimura 8 Tsutana, Fujisawa City, Kanagawa Prefecture, Isuzu Central Research Institute

Claims (1)

[Claims] 1. A first roller for bending an outer skin strip into a U-shape, a second roller for bending the U-shaped outer skin strip into a C-shape, and a C-shaped outer skin strip. A filling device for filling the powder, a third roller for forming the outer skin strip after the powder is formed into a semi-circular arc shape, and a joining piece of the semi-arcuate outer skin strip facing in the radial direction is bent inward. In a wire manufacturing apparatus provided with a cylindrical forming roller group for forming an arc portion into a cylindrical shape, a wedge capable of digging into the gap between the facing joining pieces and pressing the powder inside, between the third roller and the cylindrical forming roller group. A wire manufacturing apparatus characterized in that a jig is provided.